Should I stay or should I go?

**SERIOUS ANSWERS ONLY** Last year, around this time, my bf had issued a break with me (he said after my accident, i had changed, and he missed the old me).....so after a month of being apart, I changed..and we got back together, but my heart was never the same. For the past year, Ive seen a change in him, he is very self absorbed. And doesnt seem to care about me. He says he loves me, calls me morning noon and night and we see each other every weekend, but theres something missing. A few examples are my birthday was last month, and yes, i saw him that weekend before it, and asked what he was doing if he wanted to get together, he said no, he was going home after work. he then surprised me at work (i worked night shift) and he came in with flowers and a cake for me, which i thought was sweet, then after i was all buttered up, laid it on me that he was going out that night with coworkers, cos it was her going away party. i was like oh cool, can i come, hes like no, its her party, and only coworkers are going, so i was like so no ppl are bringing dates, hes like im sure, but everyone dating already works there. so i was pissed. i got dissed on my own birthday for another girls party. he called me selfish. then it was cinco de mayo i was like oh i have off, lets go out, hes like no, going home after work, i was like fine....only to find out that night, he was like oh my friend lauren asked me out, she wanted to take me out for his birthday (our bdays are close in date)...i was like wtf r u serious. i was pissed, needless to say. we fought. made up, and he was all back to his normal lovey self. then as a bday gift he got me yankees/red sox tickets and we were going to dave and busters in nyc(its a arcade/restaurant/bar) that we love. I was like cool..us time, then last minute like 40mins before we arrived in new york, he springs it on me that he invited his friend, which is not really a friend, it was a client (he works for Apple) and they became friends. I got pissed and like u didnt ask me if this was ok. hes like i dont have to, its a public place. im like whatever and was pissed. needless to say we fought. he doesnt care about my opinion apparently, he does what he wants to do always. he used to worship the ground i walked on, i was his world.....now he is his world. he focuses on him only. i dont even got a fraction of his focus it seems. he says he loves me, and things are great and he is happy......but then why am i not happy. we spoke today, and got into a fight cos his cousin is getting married, and im like am invited, hes like idk i didnt ask. im like well r u. hes like when i get the time, right now im busy with work. im like wtf, ure always busy. hes like i told you "i have to focus on my career and me right now, not the relationship" so i got mad, and was like "ok go ahead, u can go right ahead and focus on you, you can focus all you want. i need to go" and i hung up on him. i cant take this any more. any thoughts and opinions are truly appreciated. im thinking of going on a break, like he did me, and be like i need time to myself to focus on me, and see if this relationship is really worth my time and effort to fight for anymore. sorry so long, but its complicated. any thoughts??